Mary Katherine Walton, M.D.
Rheumatology Physician · Shreveport, LA
Mary Katherine Walton, M.D. is a rheumatology physician with a practice address in Shreveport, Louisiana, and NPI 1235349580, issued on May 23, 2007. Check the license (Louisiana 202525, as entered in NPPES) on the Louisiana State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mary Katherine Walton
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 202525 LA
Self-reported in NPPES; status is on the state search - Practice location
- 820 Jordan St Ste 201, Shreveport, LA 71101
- Phone
- (318) 221-0399
- Enumerated
- May 23, 2007
- Record last updated
- Mar 20, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (318) 221-1940
- Medicaid ID
- 1078859 LA
- Medicare enrollment
- Enrolled (PECOS I20111101000229); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In Shreveport, 2006
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 89 in Louisiana → Look up another NPI →
Also registered at 820 Jordan St Ste 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Emily Bergeron, PA-CPhysician Assistant1295379576
- Seth Hendrix, PA-CMedical Physician Assistant1821499823
- Frankie Pedigo, MDRheumatology Physician1700240504
Verify Mary Katherine Walton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersLouisiana State Board of Medical Examiners
Search for license 202525Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
22% fewer Medicare Part D claims than the average rheumatology physician in 2024
1,549 Medicare Part D claims for 256 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 36% of claims.
Most prescribed
- Hydroxychloroquine Sulfate284 claims
- Methotrexate281 claims
- Sulfasalazine165 claims
- Leflunomide121 claims
- Humira(Cf) Pen70 claims
- Alendronate Sodium64 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 90.4 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,067.11
120 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Larry K. Broadwell, M.D., A Medical CorporationShreveport, LA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Katherine Walton among 89 rheumatology physician records in Louisiana
Mary Katherine Walton, M.D. is one of 89 rheumatology physician records with a practice address in Louisiana. 88% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 47% of them.
- NPI issued2007 · 47% of these records are older, 35% newer
- In a Medicare fileYes · 88% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2006 · median 2004 among the 66 with a school on file
- Record last updated2020 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a Louisiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in Louisiana
There are 89 rheumatology physician records in Louisiana.
All 89 in Louisiana → Every provider in Shreveport → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Larry Broadwell, MDShreveport, LA 711011326194036
- Aaron Broadwell, MDShreveport, LA 711011851554786
- Robert Goodman, M.D.Shreveport, LA 711011235111907
- Frankie Pedigo, MDShreveport, LA 711011700240504
- Anusheh AliShreveport, LA 711031174298699
- Samina Hayat, MBBSShreveport, LA 711031346268026
- Mamatha Katikaneni, MDShreveport, LA 711031902110109
- Thomas Pressly, MDShreveport, LA 711031588779425
Common questions
What is Mary Katherine Walton, M.D.'s NPI number?
Mary Katherine Walton, M.D.'s National Provider Identifier (NPI) is 1235349580, issued on May 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mary Katherine Walton, M.D. located?
The NPPES record lists a practice address at 820 Jordan St Ste 201, Shreveport, LA, 71101. Phone: (318) 221-0399. Providers update this record themselves, so call before visiting.
How can I verify Mary Katherine Walton, M.D.'s license?
NPPES lists Louisiana license number 202525, as entered by the provider. Search the Louisiana State Board of Medical Examiners at https://www.lsbme.la.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mary Katherine Walton, M.D. prescribe under Medicare Part D?
In 2024, Mary Katherine Walton, M.D. had 1,549 Medicare Part D claims for 256 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
What is Mary Katherine Walton, M.D.'s MIPS final score?
The 2023 MIPS final score is 90.4 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.